Meters and Testers

A microammeter circuit is like a special tool to measure electricity. Regular tools might be too strong for very weak currents, but this circuit uses a super sensitive meter microammeter or a special setting on a multimeter to sniff out tiny electrical flows typically in the range of millionths of an amp. The other parts […]

This electronic component tester circuit is like a doctor for your electronics stuff. Before you build something cool, you can use this tester to check parts like resistors, capacitors, transistors and more. The tester tells you if they are working properly, so you do not waste time using broken parts in your project. This is […]

This Wireless RF Network Cable Tester Circuit is like an X ray for your internet wires. It can sniff out radio frequency signals coursing through network cables like ethernet, modem or even satellite TV cables all without touching them. This makes it super easy to check if your cables are working properly. Simply hold the […]

A temperature meter circuit is like a tiny detective for heat. It uses a special sensor, like a thermocouple or a thermistor to feel the temperature around it. This sensor can be a simple component or even a clever chip like the LM35 or LM34 that turns heat into electricity. The circuit then takes that […]

A thermometer circuit is like a tiny detective for heat. It uses special sensors to sniff out the temperature and then shows it on a display, like a digital thermometer. These circuits come in all shapes and sizes, using different ways to sense the temperature. No matter which kind you use, though they all give […]

A TV remote tester circuit is like a tiny doctor for your remote control. This simple circuit uses an infrared sensor, kind of like an eye for invisible light, to see if your remote is sending out the right signals when you press a button. If it is, a light will turn on or a […]